Like the shunt calibration module for strain gaged extensometers, the VREF module is used to transfer Epsilon’s calibration to a customer’s electronics. 

Calibration only requires these simple steps:

   1. With the VREF module connected to the testing machine’s strain channel input, set VREF to 0V and zero the testing machine’s strain channel. This is the zero reference.

   2. Set VREF to 10V and calibrate the full scale extensometer value on the testing machine’s strain channel. This is the calibrated full scale.

   3. If your testing machine requires returning to 0V after setting full scale, set VREF back to 0V and zero the testing machine’s strain channel.

   4. Reconnect the extensometer’s signal conditioner to the testing machine and you’re ready to go.